Meerkat (Disk Space Monitor) sends admins an email alert whenever a disk runs low on free space. Meerkat is a tiny unintrusive service configured by a separate small GUI. From the GUI you can set which disks to monitor, the free space threshold, who to notify, and the location of an SMTP server.

Requirements:
* NET Framework

The license of this software is Free, you can free download and free use this disk management software.